Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual multidão tem um time visitante de Sydney?
 ###Tabelas: CREATE TABLE list_of_interchanges_and_features (list_of_interchanges_and_features_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Dist. from Origin VARCHAR, Dist. from Terminus VARCHAR, Speed Limit VARCHAR, Location (all in Nagano ) VARCHAR) CREATE TABLE mps_1707–1868 (mps_1707–1868_id AUTO_INCREMENT PRIMARY KEY, Year INT, First member VARCHAR, First party VARCHAR, Second member VARCHAR, Second party VARCHAR) CREATE TABLE 1st_round (1st_round_id AUTO_INCREMENT PRIMARY KEY, Home team VARCHAR, Home team score VARCHAR, Away team VARCHAR, Away team score VARCHAR, Ground VARCHAR, Crowd INT, Date VARCHAR) CREATE TABLE composition_of_the_15th_seanad (composition_of_the_15th_seanad_id AUTO_INCREMENT PRIMARY KEY, Administrative Panel INT, Agricultural Panel INT, Cultural and Educational Panel INT, Industrial and Commercial Panel INT, Labour Panel INT, National University of Ireland INT, University of Dublin INT, Nominated by the Taoiseach INT, Total INT) CREATE TABLE winners_of_the_virginia_derby_since_1998 (winners_of_the_virginia_derby_since_1998_id AUTO_INCREMENT PRIMARY KEY, Year INT, Winner VARCHAR, Jockey VARCHAR, Trainer VARCHAR, Owner VARCHAR, Distance (Miles) VARCHAR, Time VARCHAR)  
SELECT MAX Crowd FROM 1st_round WHERE Away team = sydney